State Department officials told Senate investigators last year they could not find any Pagliano work emails from Clinton's tenure, an assertion first reported by Politico.
Raj Shah, spokesman for the RNC, said: 'It's hard to believe that an IT staffer who set up Hillary Clinton's reckless email server never sent or received a single work-related email in the four years he worked at the State Department.'
Clinton's campaign officials did not immediately respond to a request for comment by The Associated Press.
Pagliano has been offered immunity by the Justice Department in its continuing investigation into Clinton's server and emails and whether the setup violated national security laws.
Pagliano's lawyer, Mark MacDougall, declined to comment.
Only one email sent by Pagliano surfaced among 30,000 emails reviewed and released by the State Department since last summer.
That email, sent to Clinton by Pagliano in November 2012, wished her 'Happy Birthday Madam Secretary. To many more!'
Pagliano's email address was censored, unlike most State Department emails – suggesting that he sent the message from a private address.
Clinton did not reply directly to Pagliano, instead sending a copy of an email to an aide with the instruction: 'Pls respond.'
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